Zero.

Copyright system barely ever benefits the authors themselves. Instead, it is one of the forces perpetuating the dominance of large businesses, and allowing monopolies and oligopolies to proliferate.

Particularly egregious are patents in the field of technology. We essentially agree to stifle the progress in the name of profits of patent holders - profits they'll take from us - and it is not alright.

We must keep technology in the public domain for the benefit of society, and we must work on better forms of author compensation.